21 Days Theory Season 1

Season 1

A playful rivalry turns into something more when a cocky senior dares his classmate to win the school’s top celebrity’s heart in just 21 days.

Air date: 2022-08-07

Episodes: 4

Q meets X and is challenged to beat him in 21 days—sparking rivalry and unexpected bonds.

Air date: 2022-08-07 • ★ 10

After X’s injury, Q tends to him closely, giving them a chance to see each other differently.

Air date: 2022-08-14 • ★ 10

As their days together grow, Q’s feelings shift, and mutual understanding slowly deepens.

Air date: 2022-08-21 • ★ 10

At a turning point, Q and X must face whether the “21-day theory” will define their future.

Air date: 2022-08-28 • ★ 10